Liquid ejecting head and liquid ejecting device

A liquid ejection head and nozzle technology, which is applied in printing and other directions, can solve the problems of short service life of nozzle plate, decrease of surface hydrophobicity, increase of printing cost, etc., so as to prolong service life, improve performance and reduce the possibility of delamination sexual effect

Active Publication Date: 2014-12-24
ZHUHAI SAILNER 3D TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the rubber knife in the printing device continues to wipe the nozzle plate, the hydrophobicity of its surface will gradually decrease, which will affect the printing quality; and because the nozzle plate is continuously impacted by ink, it may cause delamination between the hydrophobic layer and the nozzle plate , resulting in a shorter service life of the nozzle plate, which increases the printing cost to a certain extent

Method used

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  • Liquid ejecting head and liquid ejecting device
  • Liquid ejecting head and liquid ejecting device
  • Liquid ejecting head and liquid ejecting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The inkjet head provided in this embodiment is a piezoelectric driven inkjet head, and its structure is as follows: figure 1 with 2 As shown, the nozzle plate 5 and the substrate 1 are included, and the nozzle 7 is formed on the nozzle plate 5, and the space between the nozzle plate 5 and the substrate 1 forms the above-mentioned pressure chamber 4, and the pressure chamber 4 passes through the nozzle plate 5. The nozzle 7 communicates with the outside world. In practical applications, the inkjet head may contain a plurality of nozzles 7 and a plurality of pressure chambers 4 , wherein the pressure chambers 4 communicate with the common chamber 2 , and the ink is distributed to each pressure chamber 4 from the common chamber 2 . The surface of the nozzle plate 5 facing away from the pressure chamber 4 is provided with a superhydrophobic material layer 6, which can form a superhydrophobic material layer 6 in the area around the nozzle 7 after the nozzle 7 is formed; it ...

Embodiment 2

[0067] The inkjet head provided in this embodiment is a thermal bubble inkjet head, and its structure is as follows: Figure 4 As shown, the difference from Embodiment 1 is that the piezoelectric element 3 arranged outside the pressure chamber 4 is replaced by a thin-film resistance layer 3' arranged in the pressure chamber 4, and the material of the thin-film resistance layer 3' can be, for example, Tantalum Aluminum Alloy, Nickel Chrome Alloy, Tungsten Silicon Nitride or Titanium Nitride. When the control signal is applied, the thin-film resistance layer 3' heats the ink to about 340°C at a rate of 1000°C / μs, and the volatile components in the ink are vaporized to generate bubbles, which are like a piston, which are continuously generated toward the nozzle plate 5 The thrust in the direction pushes the ink drop out from the nozzle 7.

[0068] Wherein, the superhydrophobic material layer 6 is a butyl methacrylate-ethylene glycol dimethacrylate copolymer layer prepared by an ...

Embodiment 3

[0071] The structure and manufacturing method of the inkjet head provided in this example are the same as those in Example 2, except that the superhydrophobic material layer 6 is a styrene-divinylbenzene copolymer layer prepared by in-situ polymerization. The preparation method is as follows: using 24 parts by weight of ethylene, 16 parts by weight of 1,4-divinylbenzene, 50 parts by weight of 1-n-decyl alcohol and 10 parts by weight of tetrahydrofuran as monomers, 2,2'-azobisiso 1 weight part of butyronitrile was used as a thermal initiator, reacted at 70°C for 24 hours, and carried out in-situ polymerization to prepare a styrene-divinylbenzene copolymer layer, which was then washed with formaldehyde and dried in the air, so that the nozzle plate A superhydrophobic material layer is formed on the surface, which has a porous surface microstructure, such as Figures 6b-6c As shown, wherein 10 μm and 400nm are contrasting lengths, the porous surface pore diameter of the superhydr...

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PUM

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Abstract

The invention provides a liquid ejecting head and a liquid ejecting device. The liquid ejecting head comprises a nozzle plate and a substrate, the nozzle plate is provided with a nozzle, and a pressure cavity is formed in the space between the nozzle plate and the substrate. The pressure cavity is communicated with the outside through the nozzle on the nozzle plate. The substrate is provided with a pressure generating part which enables the pressure in the pressure cavity to be changed. A super-hydrophobic material layer is arranged on the face, deviated from the pressure cavity, of the nozzle plate, and the super-hydrophobic material layer is at least placed around the area of the nozzle. The liquid ejecting device comprises the liquid ejecting head. The liquid ejecting head is used for improving the printing quality, and the service life of the nozzle plate is prolonged.

Description

technical field [0001] The invention relates to a liquid ejection head and a liquid ejection device, in particular to a liquid ejection head and a liquid ejection device provided with a superhydrophobic material layer on the surface of a nozzle plate, and belongs to the technical field of printing. Background technique [0002] A liquid ejection head is a device that ejects a liquid from a nozzle when the pressure of the liquid in the pressure chamber fluctuates. A typical liquid ejection head is, for example, an inkjet head used in an inkjet printing method. Recently, in the field of inkjet printing, technical research has been conducted on reducing the size of ink droplets, increasing the driving frequency, and increasing the number of nozzles, etc., to make recording properties more advanced in inkjet recording systems. In the two types of inkjet printing devices, the thermal bubble and the piezoelectric drive, the ink is ejected from the nozzle in the form of small drop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01
Inventor 李越
Owner ZHUHAI SAILNER 3D TECH CO LTD
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